require 'net/imap'
require 'pp'

USERNAME = 'uname'
PASSWORD = 'pword'

imap = Net::IMAP.new('imap.gmail.com',993,true)
imap.login(USERNAME,PASSWORD)
imap.examine('INBOX')
msgs = imap.search(["UNSEEN"]).map do |message_id|
  envelope = imap.fetch(message_id, "ENVELOPE")[0].attr["ENVELOPE"]
  [envelope.from[0].name,envelope.subject]
end

pp msgs